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Add/Subtract
Multiply/Divide
Fractions/Decimals
Vocabulary
Substitution
100

6 + c = 20

c = 14

100

5w = 45

w = 9

100

k + 1/3 = 4

k = 3  2/3

100

Unknown value

Variable

100

Which values in this, if any, is a solution to the equation?

10 = z + 6

z = .6, 4, 16, 60

z = 4

200

e - 10 = 100

e = 110

200

f ÷ 8 = 3

f = 24

200

20 = g - 4.9 

g = 24.9

200

Operations that "undo" the action of another. Considered as "opposites."

Inverse Operations

200

Which values in this, if any, is a solution to the equation?

8y = 48

y = 4, 6, 8, 10

y = 6

300

75 = 25 + m

m = 50

300

c ÷ 10 = 21

c = 210

300

1.2a = 2.4

a = 2

300

A number multiplied by a variable.

Coefficient

300

Which values in this, if any, is a solution to the equation?

12.9 = z - 4.3

z = 16, 17, 17.2, 18.2

z = 17.2

400
123 = m - 3

m = 126

400

200 = 5y

y = 40

400
(1/2)h = 21

h = 42

400

A mathematical statement that two expressions are the same

Equation

400

Which values in this, if any, is a solution to the equation?

g/10 = 12

g = 2, 22, 120

g = 120

500

12,345 = r - 1,000

r = 13,345

500

k ÷ 7 = 200

k = 1,400

500

a ÷ 6/7 = 2

a = 2  1/3

500

A method of solving an equation through replacing the variables with different values.

Substitution

500

Which values in this, if any, is a solution to the equation?

1000 + y = 3000

y = 2000, 3000, 4000

y = 4000